CN111521092A - Method for detecting wall thickness of aviation case - Google Patents
Method for detecting wall thickness of aviation case Download PDFInfo
- Publication number
- CN111521092A CN111521092A CN202010259272.9A CN202010259272A CN111521092A CN 111521092 A CN111521092 A CN 111521092A CN 202010259272 A CN202010259272 A CN 202010259272A CN 111521092 A CN111521092 A CN 111521092A
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- Prior art keywords
- wall thickness
- measuring tool
- measuring
- edge
- positioning pin
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention belongs to the field of aviation casings and relates to a wall thickness inspection method for an aviation casing. The measuring tool is designed into two measuring tools according to the minimum wall thickness and the maximum wall thickness, the measuring tools can judge the wall thickness according to the comparison between the measuring tools and the blank edge on the surface of a part, a large amount of time is saved by using the measuring tools, and inspectors do not need to compare the measured value with the theoretical value, the burden of the inspectors is reduced, and the fatigue of the inspectors is reduced.
Description
Technical Field
The invention belongs to the field of aviation casings and relates to a wall thickness inspection method for an aviation casing.
Background
The mounting surfaces of aviation case type products are provided with positioning holes and threaded holes, and the distances from the positioning holes and the threaded holes to the edges of the inner walls of the blanks are called wall thicknesses. The size of the wall thickness has several effects, one is to affect the strength of the threaded hole, and the other is to affect the tightness of the casing when sealing. Aircraft casing products typically have a wall thickness that is checked to ensure that the wall thickness meets the requirements. In the traditional method, wall thicknesses are measured one by using a vernier caliper, and then the measured data is compared with theoretical data to determine whether the measured data is qualified or not. However, the number of the positioning holes and the threaded holes of the casing products is large, and the number of the threads and the positioning holes of each casing product is about 300, so that a lot of time is wasted in measuring one by one. Moreover, the number of the casings produced in batches is large every year, and the time consumed for measuring the casings one by one is large. Moreover, after the measurement is carried out one by one, the measured values need to be compared with theoretical values by inspectors to determine whether the measured values are qualified, and due to the fact that the number of the measured values is large, the workload of the inspectors is increased, and errors are prone to being generated.
Disclosure of Invention
The invention develops a wall thickness inspection tool, uses a new shape comparison technology to measure the wall thickness, manufactures a special measuring tool, the measuring tool uses a pin hole to position, the inner wall shape is made according to the wall thickness, the edge shape of the inner wall of the measuring tool is designed into two measuring tools according to the minimum wall thickness and the maximum wall thickness, the measuring tool can judge the wall thickness according to the comparison between the measuring tool and the blank edge on the surface of a part, the measuring tool is used for measuring, a large amount of time is saved, moreover, an inspector does not need to compare the measured value with the theoretical value, the burden of the inspector is reduced, and the fatigue of.
Technical scheme
An aviation case wall thickness inspection method comprises the following steps:
1, selecting two positioning pin holes on a part as a reference, drawing the edge of a blank according to the minimum wall thickness of a part drawing, designing a measuring tool according to the positioning pin holes and the edge of the blank,
2 processing the measuring tool according to the design drawing,
and 3, two positioning pins are arranged on the measuring tool and matched with the positioning pin holes of the casing, and whether the hole wall is smaller than the minimum wall thickness is determined by comparing the position relation between the edge of the measuring tool and the edge of the part blank.
The material of the measuring gauge is steel,
the measuring tool is provided with a plurality of weight-reducing grooves while meeting the rigidity requirement,
the measuring tool is provided with an interference-preventing through hole according to the structure of the part.
The locating pin is a fine hole.
Technical effects
The measuring tool saves a large amount of time for measurement, and inspectors do not need to compare the measured value with the theoretical value, so that the burden of the inspectors is reduced, and the fatigue of the inspectors is reduced.
Drawings
FIG. 1 is a diagram of the wall thickness inspection method steps
The specific implementation mode is as follows:
1, selecting two positioning pin holes on a part as a reference, drawing the edge of a blank according to the minimum wall thickness of a part drawing, and designing a measuring tool according to the positioning pin holes and the edge of the blank.
2, processing the measuring tool according to the design drawing.
And 3, two positioning pins are arranged on the measuring tool and matched with the positioning pin holes of the casing, and whether the hole wall is smaller than the minimum wall thickness is determined by comparing the position relation between the upper edge of the measuring tool and the edge of the part blank. If the blank edge is inside the gauge, it indicates that the part wall thickness is greater than the minimum required wall thickness.
The measuring tool is made of steel, and the rigidity of the part is increased.
The measuring tool is provided with a plurality of weight reduction grooves while meeting the rigidity requirement, so that the weight of parts is reduced.
The measuring tool is provided with an interference-preventing through hole according to the structure design of parts, so that the situation that the measuring tool and the case cannot be tightly attached due to interference is avoided.
The locating pin is the smart hole, increases the measuring stability of measuring tool.
The locating pin be detachable.
The measuring tool is also provided with a bolt through hole.
The thickness of the measuring gauge is 20 mm.
The locating pin be detachable, the pin can only be changed in the pin wearing and tearing, improves the economic nature.
The measuring tool is also provided with a bolt through hole to prevent the interference of the bolt.
Claims (8)
1. The method for detecting the wall thickness of the aviation case is characterized by comprising the following steps of:
1) firstly, selecting two positioning pin holes on a part as a reference, drawing the edge of a blank according to the minimum wall thickness of a part drawing, designing a measuring tool according to the positioning pin holes and the edge of the blank,
2) processing a measuring tool according to a design drawing,
3) two positioning pins are arranged on the measuring tool and matched with the positioning pin holes of the casing, and whether the hole wall is smaller than the minimum wall thickness is determined by comparing the position relation between the edge of the measuring tool and the edge of the part blank.
2. The aircraft casing wall thickness inspection method according to claim 1, wherein said gauge material is steel.
3. The method for inspecting the wall thickness of an aircraft casing according to claim 1, wherein the measuring gauge is provided with a plurality of weight-reducing grooves while meeting the rigidity requirement.
4. The aircraft casing wall thickness inspection method according to claim 1, wherein the measuring gauge is designed with interference-preventing through holes according to the structure of the part.
5. The aircraft casing wall thickness inspection method according to claim 1, wherein the positioning pin is a precision hole.
6. The aircraft casing wall thickness inspection method according to claim 1, wherein the positioning pin is detachable.
7. The method of claim 1, wherein the gauge is further provided with bolt-passing holes.
8. The aircraft casing wall thickness inspection method according to claim 1, wherein the gauge thickness is 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010259272.9A CN111521092A (en) | 2020-04-03 | 2020-04-03 | Method for detecting wall thickness of aviation case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010259272.9A CN111521092A (en) | 2020-04-03 | 2020-04-03 | Method for detecting wall thickness of aviation case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111521092A true CN111521092A (en) | 2020-08-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010259272.9A Pending CN111521092A (en) | 2020-04-03 | 2020-04-03 | Method for detecting wall thickness of aviation case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111521092A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2618139Y (en) * | 2003-04-17 | 2004-05-26 | 中国重型汽车集团有限公司 | Hole measuring tester |
| CN2852044Y (en) * | 2005-12-07 | 2006-12-27 | 长安汽车（集团）有限责任公司 | Apparatus for detecting cast profiled hole surface wall thickness |
| CN201242418Y (en) * | 2008-08-19 | 2009-05-20 | 株洲丰菱汽车零部件制造有限公司 | Apparatus for measuring batter drainage hole wall thickness |
| CN101907434A (en) * | 2009-06-02 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Device for detecting distance between edge and hole |
| CN202692897U (en) * | 2012-08-10 | 2013-01-23 | 湖北神力锻造有限责任公司 | Testing fixture for testing limit wall thickness of automobile forward shaft master pinhole |
| CN203349756U (en) * | 2013-07-08 | 2013-12-18 | 中铁十七局集团第三工程有限公司 | Special track board pitch gauge |
| CN104764384A (en) * | 2015-04-20 | 2015-07-08 | 湖州以创精工机械有限公司 | Wall thickness difference measuring instrument |
| CN206037890U (en) * | 2016-09-30 | 2017-03-22 | 浙江德福精密驱动制造有限公司 | Three round pin shaft yoke wall -depth detecting devices |
| CN207540469U (en) * | 2017-09-27 | 2018-06-26 | 中国商用飞机有限责任公司 | For the survey tool in hole |
| CN208567720U (en) * | 2018-01-24 | 2019-03-01 | 重庆市镁垲鑫机械制造有限公司 | Axis class axis hole Wall Thickness Testing Device |
| CN208671942U (en) * | 2018-08-01 | 2019-03-29 | 成都飞机工业（集团）有限责任公司 | A kind of molding pipe fitting wall thickness measuring fixture |
-
2020
- 2020-04-03 CN CN202010259272.9A patent/CN111521092A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2618139Y (en) * | 2003-04-17 | 2004-05-26 | 中国重型汽车集团有限公司 | Hole measuring tester |
| CN2852044Y (en) * | 2005-12-07 | 2006-12-27 | 长安汽车（集团）有限责任公司 | Apparatus for detecting cast profiled hole surface wall thickness |
| CN201242418Y (en) * | 2008-08-19 | 2009-05-20 | 株洲丰菱汽车零部件制造有限公司 | Apparatus for measuring batter drainage hole wall thickness |
| CN101907434A (en) * | 2009-06-02 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Device for detecting distance between edge and hole |
| CN202692897U (en) * | 2012-08-10 | 2013-01-23 | 湖北神力锻造有限责任公司 | Testing fixture for testing limit wall thickness of automobile forward shaft master pinhole |
| CN203349756U (en) * | 2013-07-08 | 2013-12-18 | 中铁十七局集团第三工程有限公司 | Special track board pitch gauge |
| CN104764384A (en) * | 2015-04-20 | 2015-07-08 | 湖州以创精工机械有限公司 | Wall thickness difference measuring instrument |
| CN206037890U (en) * | 2016-09-30 | 2017-03-22 | 浙江德福精密驱动制造有限公司 | Three round pin shaft yoke wall -depth detecting devices |
| CN207540469U (en) * | 2017-09-27 | 2018-06-26 | 中国商用飞机有限责任公司 | For the survey tool in hole |
| CN208567720U (en) * | 2018-01-24 | 2019-03-01 | 重庆市镁垲鑫机械制造有限公司 | Axis class axis hole Wall Thickness Testing Device |
| CN208671942U (en) * | 2018-08-01 | 2019-03-29 | 成都飞机工业（集团）有限责任公司 | A kind of molding pipe fitting wall thickness measuring fixture |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200811 |
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| RJ01 | Rejection of invention patent application after publication |